CVE-2025-14463
📋 TL;DR
The Payment Button for PayPal WordPress plugin has an authentication bypass vulnerability that allows unauthenticated attackers to create fake orders without actual PayPal transactions. Attackers can inject arbitrary transaction details, corrupt order databases, and trigger unauthorized purchase receipt emails. All WordPress sites using this plugin up to version 1.2.3.41 are affected.
💻 Affected Systems
- Payment Button for PayPal WordPress plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete order database corruption, financial record falsification, email spam/abuse, and potential data integrity issues affecting business operations and customer trust.
Likely Case
Unauthorized order creation with fake transaction data, database pollution, and receipt emails sent to arbitrary addresses without actual payments.
If Mitigated
Minimal impact with proper authentication and transaction verification in place, though database cleanup may still be required.
🎯 Exploit Status
Direct POST requests to AJAX endpoint with minimal parameter manipulation required; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check WordPress plugin repository for version > 1.2.3.41
Vendor Advisory: https://plugins.trac.wordpress.org/browser/wp-paypal
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find 'Payment Button for PayPal' plugin
4. Click 'Update Now' if update available
5. If no update, deactivate and remove plugin immediately
🔧 Temporary Workarounds
Disable vulnerable AJAX endpoint
allBlock access to the vulnerable wppaypalcheckout_ajax_process_order endpoint
Add to .htaccess: RewriteRule ^wp-admin/admin-ajax\.php\?action=wppaypalcheckout_ajax_process_order - [F,L]
Disable plugin
linuxTemporarily disable the plugin until patched
wp plugin deactivate wp-paypal
🧯 If You Can't Patch
- Immediately disable the Payment Button for PayPal plugin
- Implement web application firewall rules to block POST requests to /wp-admin/admin-ajax.php with wppaypalcheckout_ajax_process_order action
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Payment Button for PayPal' version ≤ 1.2.3.41Check Version:
wp plugin list --name='Payment Button for PayPal' --field=versionVerify Fix Applied:
Verify plugin version > 1.2.3.41 or confirm plugin is deactivated/removed📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=wppaypalcheckout_ajax_process_order from unauthenticated users
- Unusual order creation spikes without corresponding payment gateway logs
- Email logs showing purchase receipts to non-customer addresses
Network Indicators:
- HTTP POST requests to WordPress AJAX endpoint with PayPal transaction parameters from unexpected sources
SIEM Query:
source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND method="POST" AND params.action="wppaypalcheckout_ajax_process_order" AND user="-"🔗 References
- https://plugins.trac.wordpress.org/browser/wp-paypal/tags/1.2.3.41/wp-paypal-checkout.php#L249
- https://plugins.trac.wordpress.org/browser/wp-paypal/tags/1.2.3.41/wp-paypal.php#L70
- https://plugins.trac.wordpress.org/browser/wp-paypal/trunk/wp-paypal-checkout.php#L249
- https://plugins.trac.wordpress.org/browser/wp-paypal/trunk/wp-paypal.php#L70
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3431974%40wp-paypal&new=3431974%40wp-paypal&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/814e50de-3690-4adf-bc01-a63cd71bd1cf?source=cve
